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  • GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
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GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
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Load image into Gallery viewer, GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
Load image into Gallery viewer, GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
Load image into Gallery viewer, GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)

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GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)

Go Fast Bits
GFB2010
Pulleys - Crank, Underdrive
  • LotQuantity:1
$479.50 CAD $431.55 CAD
It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from...
$431.55 CAD
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GFB Evo 4-9 Under-Drive Crank Pulley w/ Belt
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GFB 02-10+ WRX/STI Crank Pulley (Not Under-Drive)
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GFB 04-10 WRX/STI 3 Piece Under-Drive Pulley Kit w/ Belts (Crank Alternator & Power Steering)
Description + Fitment
It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM in a second or two saps a measurable amount of torque. GFB Lightweight Pulleys reduce inertia by up to 85 percent, so most of the torque that used to accelerate the pulley can now be applied to the wheels.
Installation Instructions


This Part Fits:

Year Make Model Submodel
2008 Subaru Forester Sports 2.5 XT
2004-2005 Subaru Forester XT
2006-2008 Subaru Forester XT Limited
2005 Subaru Forester XT Premium
2003-2004 Subaru Impreza Outback
2005 Subaru Impreza Outback Sport
2003-2005 Subaru Impreza RS
2003-2004 Subaru Impreza TS
2002-2007 Subaru Impreza WRX
2006-2007 Subaru Impreza WRX Limited
2004-2007 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2006-2007 Subaru Impreza WRX TR
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